Current Electricity
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# Current Electricity

The complete content is developed in High Quality 3D animation, that will help you to understand the critical concepts.
3.4 (4 ratings)
82 students enrolled
Created by Digital Tutors
Last updated 4/2015
English
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Includes:
• 6.5 hours on-demand video
• Access on mobile and TV
• Certificate of Completion
What Will I Learn?
• From this course students can gain knowledge on Current electricity, Electrostatic potential and capacitance, Electric charges and fields.
View Curriculum
Requirements
• Students should know basic knowledge on current flow.
Description

Definition: It is defined as the time rate of flow of charge through any cross section of a conductor.

Electric current = total charge flowing per time taken.

i = q / t .

OHM'S LAW:

It states that the current 'i' flowing through a conductor is directly proportional to the potential difference V across the ends of the conductor, provided physical conditions of the conductor such as temperature, mechanical strain etc. are kept constant.

Electric Current:

1 ampere of electric current is produced when 1 coulomb of electric charge passes through the cross-section of the conductor in 1 second.

RESISTANCE:resistance of a specimen of a material is the opposition offered by it to flow of current.

Definition: the resistance of a conductor is defined as the ratio of the potential difference V across the conductor to the current i flowing through the conductor.

Combination of resistors

Series combination:

Consider a number of resistors connected in series by joining them end to end such that same current passes through all the resistors.

Parallel combination:

Consider a number of resistors connected in parallel by joining one end at one point and other end at another point.

Who is the target audience?
• Students studying in middle and upper classes.
• Science students, teachers and lecturers.
Compare to Other Electricity Courses
Curriculum For This Course
110 Lectures
06:40:33
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Electric charges and fields
18 Lectures 01:13:54
Preview 00:46

Preview 00:48

Preview 02:01

Preview 02:44

Preview 05:58

Preview 01:45

Basic properties of electric charges
05:24

Coulomb's law
04:45

Forces between multiple charges
03:59

Electric field
05:08

Electric field lines
03:59

Electric dipole
08:22

Dipole in a uniform external field
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Electric field of a continuous charge distribution
04:14

Gauss's theorem
04:56

Application of gauss's theorem
09:23

Electric field lines
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Summary
02:30

Electric charges and fields - level 1
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Electric charges and fields - level 2
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Electrostatic potential and capacitance
19 Lectures 01:05:05
Prerequisites
01:02

Learning objectives
00:55

Introduction
00:58

Electric potential
05:18

Potential due to a point charge
02:30

Potential due to an electric dipole
02:53

Potential due to a system of charges
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Equipotential surfaces
03:11

Potential energy of system of charges
03:41

Potential energy in an external field
03:30

Electrostatics of conductors
01:34

Dielectrics and polarization
03:33

Capacitors and capacitance
01:44

The parallel plate capacitor
02:18

Effect of dielectric on capacitance
04:46

Combination of capacitors
04:26

Energy stored in capacitors
05:37

Van de graff generator
06:10

Summary
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Electrostatic potential and capacitance - level 1
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Electrostatic potential and capacitance - level 2
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Current electricity
17 Lectures 01:10:58
Prerequisites
00:20

Learning objectives
00:59

Introduction
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Electric current
04:14

Ohm's law
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Resistance
02:27

Superconductors
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Combination of resistor
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Electrical cells
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Grouping of cells
07:32

Kirchhoff rules
04:46

Wheatstone bridge
07:04

Metre bridge
02:06

Potentiometer
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Temperature dependence of resistivity
03:04

Drift velocity
13:22

Summary
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Current electricity - level 2
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Learning objectives
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Introduction
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Instantaneous value of current (i)
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R.M.S Value of ac
07:24

Power in ac circuit
05:38

AC Through a resistor
05:53

AC Voltage applied to an inductor
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Inductive reactance
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AC voltage applied to a capacitor
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AC Voltage applied to a series lcr circuit
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Resonant circuit
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Importance of power factor
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Lc oscillations a qualitative study
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LC Oscillations lc circuit
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Transformer
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Summary
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Alternating current - level 2
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Electricity
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Prerequisites
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Learning objectives
00:43

Introduction
01:05

Electric current and circuit
03:03

Electric potential and potential difference
02:04

Circuit diagram
01:04

Ohms law
02:55

Factors on which the resistance of a conductor depends
03:06

Resistance of a system of resistors
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Resistors in series
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Resistors in a parallel
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Heating effect of electric current
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Practical’s of heating effect
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Electric power
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Summary
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ELECTRICAL CONDUCTIVITY OF LIQUIDS
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ELECTRICAL CONDUCTIVITY OF LIQUIDS
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WHAT IS ELECTRICAL CONDUCTIVITY
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HEATING EFFECT OF ELECTRIC CURRENT
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HEATING EFFECTS OF ELECTRICAL ENERGY
02:27

FACTORS GOVERNING HEATING EFFECT OF ELECTRIC CURRENT
06:50

APPLICATIONS OF HEATING EFFECT OF ELECTRIC CURRENT
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ELECTRICAL ENERGY & EXAMPLES
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MEASUREMENT OF ELECTRICAL ENERGY AND ITS UNIT
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ELECTRIC POWER
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WATTAGE OF ELECTRICAL APPLIANCES
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House hold consumption of electrical energy
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Power rating of electrical appliances
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COMMERCIAL UNIT OF ELECTRICAL ENERGY
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STATIC ELECTRICITY
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DIFFERENT KINDS OF CHARGES
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ELECTROSCOPE
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EXPLANATION OF CHARGE ON A BODY IN
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GOLD LEAF ELECTROSCOPE
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LIGHTNING CONDUCTORS
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LIGHTNING
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PITH BALL ELECTROSCOPE
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QUANTUM NATURE OF CHARGE
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SIMPLE ORBITAL OF ATOM
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STATIC ELECTRICITY SPARKS
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